Emergency services responded to an incident at Air Force Base Whenuapai this evening.
It is understood a Hercules transport aircraft was in trouble over the RNZAF base.
The aircraft has landed safely.
The Fire Service's communications team said in a tweet the Air Force had asked them to refrain from making comment to media.
A Defence Force spokesman said a C130 Hercules was en route from Whenuapai to Woodbourne when the crew received a warning indicator on the antiskid braking system.